An Electrochemical Cell for Operando Study of Lithium Batteries Using Synchrotron Radiation

J.B. Leriche (1) , S. Hamelet (2) , J. Shu (3) , M. Morcrette (1) , C. Masquelier (1) , G. Ouvrard (4) , M. Zerrouki (4) , P. Soudan (4) , S. Belin (5) , E. Elkaïm (6) , F. Baudelet (6)

1 LRCS - Laboratoire réactivité et chimie des solides - UMR CNRS 7314
2 RS2E - Réseau sur le stockage électrochimique de l'énergie
3 LBNL - Lawrence Berkeley National Laboratory [Berkeley]
4 IMN - Institut des Matériaux Jean Rouxel
5 LURE - Laboratoire pour l'utilisation du rayonnement électromagnétique
6 SSOLEIL - Synchrotron SOLEIL

A new electrochemical cell has been specially designed for operando experiments at synchrotron facilities both for X-ray diffraction and X-ray absorption. It allows the investigation of insertion materials under high current densities (up to 5C rate) and hence to study complex phenomena of structural and electronic changes out of equilibrium. The LiFePO4-FePO4 system has been chosen as a case study to validate this cell, and tricky phenomena, with apparent delays in phase formation compared with the number of electrons exchanged, have been spotted.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

J.B. Leriche, S. Hamelet, J. Shu, M. Morcrette, C. Masquelier, et al.. An Electrochemical Cell for Operando Study of Lithium Batteries Using Synchrotron Radiation. Journal of The Electrochemical Society, 2010, 157 (5), pp.A606. ⟨10.1149/1.3355977⟩. ⟨hal-00477327⟩